Zvezda SKS-94Banter aside, it's quite likely there's not much to be change on the aerodynamic design of an easy-to-fly propeller trainer aircraft from that time to present time. I'm sure instrumentation and engine of the trainer are already modernised. On the other hand, a trainer with seat ejection capability may require an entirely new design from scratch. Then again, does any of the modern propeller trainer has seat ejection? Probably not.
Martin-Baker Mk16/Mk17